Username   Password       Forgot your password?  Forgot your username? 


A Rotated Constellation Aided OFDM System for Wireless Communication

Volume 14, Number 12, December 2018, pp. 3228-3236
DOI: 10.23940/ijpe.18.12.p32.32283236

Qianqian Luo, Huiheng Liu, and Lixin Song

School of Physics and Electronic Engineering, Hubei University of Arts and Science, Xiangyang, 441053, China

(Submitted on September 6, 2018; Revised on October 13, 2018; Accepted on November 14, 2018)


The most common way to improve spectral efficiency of the orthogonal frequency-division multiplexing (OFDM) communication system is to increase the modulation orders. However, studies have shown that this method will increase the bit error rate and symbol error rate simultaneously. In order to improve the spectral efficiency of OFDM system without reducing its reliability, this paper proposes a rotated four leaves clover (R-FLC) constellation. In this scheme, each symbol can carry additional bits through alternately employing two rotated constellations with different phases. A general rotated constellation aided OFDM system for wireless communication is also proposed. The bit error rate and effective spectral efficiency performances of this system under additional white Gaussian noise and multipath Rayleigh fading channel are evaluated in detail. Compared with the traditional Quadrature Amplitude Modulation (QAM) aided OFDM system, simulation results show that the proposed system is capable of improving the spectral efficiency without sacrificing signal-to-noise ratio under additional white Gaussian noise channel and multipath Rayleigh fading channel. The proposed system can effectively overcome the Inter Symbol Interference (ISI). The system architecture has a certain reference and practical value for the development of OFDM modulation technology.


References: 10

                    1. L. Dai, J. Wang, Z. Wang, P. Tsiaflakis, and M. Moonen, “Spectrum-and Energy-Efficient OFDM based on Simultaneous Multi-Channel Reconstruction,” IEEE Transactions on Signal Processing, Vol. 61, No. 23, pp. 6047-6059, 2013
                    2. A. U. Ahmed and J. R. Zeidler, “Novel Low-Complexity Receivers for Constant Envelope OFDM,” IEEE Transactions on Signal Process, Vol. 63, No. 17, pp. 4572-4582, 2015
                    3. S. W. Hong, E. S. Kang, and D. S. Han, “Additional Data Transmission with Rotated QPSK Constellation,” Electronics Letters, Vol. 51, No. 5, pp. 394-395, 2015
                    4. C. Wang, G. Cui, and W. Wang, “Dual-Stream Transceiver Structure with Single Antenna for Phase-Modulated OFDM,” IEEE Communications Letters, Vol. 20, No. 9, pp. 1756-1759, 2016
                    5. T. Wang, J. G. Proakis, E. Masry, and J. R. Zeidler, “Performance Degradation of OFDM Systems Due to Doppler Spreading,” IEEE Transactions on Wireless Communications, Vol. 5, No. 6, pp. 1422-1432, 2006
                    6. Z. H. E. Tan and A. K. Krishna, “A Quad State-Paired QPSK Modulation for Higher Data Rate Communication,” in Proceedings of IEEE 83rd Vehicular Technology Conference (VTC Spring), Nanjing, 2016
                    7. Z. Zhang, F. Tian, L. Ge, F. Zeng, and G. Xuan, “M-Ary Spread Spectrum OFDM Structure based on Cascaded Cyclic Shift Complementary Pairs,” in Proceedings of International Conference on Signal Processing IEEE, pp. 1584-1589, Kerala, 2015
                    8. K. Davaslioglu and E. Ayanoglu, “Quantifying Potential Energy Efficiency Gain in Green Cellular Wireless Networks,” IEEE Communications Surveys & Tutorials, Vol. 16, No. 4, pp. 2065-2091, 2014
                    9. J. Liu, J. Kim, S. Kwatra, and G. Stevens, “Rotative Quadrature Phaseshift Keying,” Electronics Letters, Vol. 28, No. 12, pp. 1095, 1992
                    10. E. S. Kang, S. W. Hong, and D. S. Han, “Improved Speed near Field Communication with Rotated QPSK Constellation and Hidden Data Transmission,” in IEEE international Symposium on Broadband Multimedia Systems and Broadcasting (BMSB), pp. 1-2, Seoul, 2012


                                      Please note : You will need Adobe Acrobat viewer to view the full articles.Get Free Adobe Reader

                                      This site uses encryption for transmitting your passwords.